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TD-1856 TD-1847

This commit is contained in:
Shengliang Guan 2020-10-29 12:17:56 +00:00
parent 43edc0378f
commit d0e60fdec1
6 changed files with 387 additions and 309 deletions
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19
src/inc/twal.h
View File

@ -19,9 +19,11 @@
extern "C" {
#endif
#define TAOS_WAL_NOLOG 0
#define TAOS_WAL_WRITE 1
#define TAOS_WAL_FSYNC 2
typedef enum {
TAOS_WAL_NOLOG = 0,
TAOS_WAL_WRITE = 1,
TAOS_WAL_FSYNC = 2
} EWalType;
typedef struct {
int8_t msgType;
@ -34,17 +36,22 @@ typedef struct {
} SWalHead;
typedef struct {
int8_t walLevel; // wal level
int32_t vgId;
int32_t fsyncPeriod; // millisecond
int8_t walLevel; // wal level
int8_t wals; // number of WAL files;
int8_t keep; // keep the wal file when closed
int8_t reserved[5];
} SWalCfg;
typedef void* twalh; // WAL HANDLE
typedef int (*FWalWrite)(void *ahandle, void *pHead, int type);
twalh walOpen(const char *path, const SWalCfg *pCfg);
int walAlter(twalh pWal, const SWalCfg *pCfg);
int32_t walInit();
void walCleanUp();
twalh walOpen(char *path, SWalCfg *pCfg);
int walAlter(twalh pWal, SWalCfg *pCfg);
void walClose(twalh);
int walRenew(twalh);
int walWrite(twalh, SWalHead *);

19
src/wal/inc/walMgmt.h → src/util/inc/talloc.h
View File

@ -13,13 +13,28 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TDENGINE_WAL_MGMT_H
#define TDENGINE_WAL_MGMT_H
#ifndef TDENGINE_UTIL_ALLOC_H
#define TDENGINE_UTIL_ALLOC_H
#ifdef __cplusplus
extern "C" {
#endif
#ifdef TSDB_USE_SYS_MEM
#define tmalloc(size) malloc(size)
#define tcalloc(size) calloc(1, size)
#define tmemalign(alignment, size) malloc(size)
#define tfree(p) free(p)
#define tmemzero(p, size) memset(p, 0, size)
#else
void *tmalloc(int32_t size);
void *tcalloc(int32_t size);
void *tmemalign(int32_t alignment, int32_t size);
void tfree(void *p);
void tmemzero(void *p, int32_t size);
#endif
#ifdef __cplusplus
}
#endif

66
src/util/src/talloc.c Normal file
View File

@ -0,0 +1,66 @@
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "os.h"
#include "taoserror.h"
#include "tulog.h"
#define TSDB_HAVE_MEMALIGN
void *tmalloc(int32_t size) {
void *p = malloc(size);
if (p == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to malloc memory, size:%d reason:%s", size, strerror(errno));
}
return p;
}
void *tcalloc(int32_t size) {
void *p = calloc(1, size);
if (p == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to calloc memory, size:%d reason:%s", size, strerror(errno));
}
return p;
}
void tfree(void *p) { free(p); }
void tmemzero(void *p, int32_t size) { memset(p, 0, size); }
#ifdef TSDB_HAVE_MEMALIGN
void *tmemalign(int32_t alignment, int32_t size) {
void *p;
int err = posix_memalign(&p, alignment, size);
if (err) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to memalign memory, alignment:%d size:%d reason:%s", alignment, size, strerror(err));
p = NULL;
}
return p;
}
#else
void *tmemalign(int32_t alignment, int32_t size) { return tmalloc(size); }
#endif

20
src/wal/inc/walInt.h
View File

@ -32,8 +32,28 @@ extern int32_t wDebugFlag;
#define wTrace(...) { if (wDebugFlag & DEBUG_TRACE) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }}
#define walPrefix "wal"
#define walRefreshIntervalMs 1000
#define walSignature (uint32_t)(0xFAFBFDFE)
typedef struct {
uint64_t version;
int32_t vgId;
int32_t fd;
int32_t keep;
int32_t level;
int32_t fsyncPeriod;
int32_t fsyncSeq;
int32_t fileIndex;
void* timer;
void* signature;
int max; // maximum number of wal files
uint32_t id; // increase continuously
int num; // number of wal files
char path[TSDB_FILENAME_LEN];
char name[TSDB_FILENAME_LEN + 16];
pthread_mutex_t mutex;
} SWal;
#ifdef __cplusplus
}
#endif

221
src/wal/src/walMgmt.c
View File

@ -16,6 +16,225 @@
#define _DEFAULT_SOURCE
#include "os.h"
#include "taoserror.h"
#include "talloc.h"
#include "tref.h"
#include "tutil.h"
#include "twal.h"
#include "walInt.h"
#include "walMgmt.h"
typedef struct {
int32_t refId;
int32_t num;
int32_t seq;
int8_t stop;
int8_t reserved[3];
pthread_t thread;
pthread_mutex_t mutex;
} SWalMgmt;
static SWalMgmt tsWal;
static int32_t walCreateThread();
static void walStopThread();
static int32_t walInitObj(SWal *pWal);
static void walFreeObj(void *pWal);
int32_t walInit() {
tmemzero(&tsWal, sizeof(SWalMgmt));
tsWal.refId = taosOpenRef(TSDB_MIN_VNODES, walFreeObj);
int32_t code = walCreateThread();
if (code != TSDB_CODE_SUCCESS) {
wError("failed to init wal module, reason:%s", tstrerror(code));
return code;
}
wInfo("wal module is initialized");
return code;
}
void walCleanUp() {
walStopThread();
taosCloseRef(tsWal.refId);
wInfo("wal module is cleaned up");
}
void *walOpen(char *path, SWalCfg *pCfg) {
SWal *pWal = tcalloc(sizeof(SWal));
if (pWal == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
pWal->fd = -1;
pWal->max = pCfg->wals;
pWal->id = 0;
pWal->num = 0;
pWal->level = pCfg->walLevel;
pWal->keep = pCfg->keep;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
pWal->signature = pWal;
tstrncpy(pWal->path, path, sizeof(path));
pthread_mutex_init(&pWal->mutex, NULL);
pWal->fsyncSeq = pCfg->fsyncPeriod % 1000;
if (pWal->fsyncSeq <= 0) pWal->fsyncSeq = 1;
if (walInitObj(pWal) != TSDB_CODE_SUCCESS) {
walFreeObj(pWal);
return NULL;
}
if (taosAddRef(tsWal.refId, pWal) != TSDB_CODE_SUCCESS) {
walFreeObj(pWal);
return NULL;
}
atomic_add_fetch_32(&tsWal.num, 1);
wDebug("vgId:%d, wal is opened, level:%d period:%d path:%s", pWal->vgId, pWal->level, pWal->fsyncPeriod, pWal->path);
return pWal;
}
int32_t walAlter(void *handle, SWalCfg *pCfg) {
SWal *pWal = handle;
if (pWal->level == pCfg->walLevel && pWal->fsyncPeriod == pCfg->fsyncPeriod) {
wDebug("vgId:%d, old walLevel:%d fsync:%d, new walLevel:%d fsync:%d not change", pWal->vgId, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
return TSDB_CODE_SUCCESS;
}
wInfo("vgId:%d, change old walLevel:%d fsync:%d, new walLevel:%d fsync:%d", pWal->vgId, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
pWal->level = pCfg->walLevel;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
return TSDB_CODE_SUCCESS;
}
void walClose(void *handle) {
SWal *pWal = handle;
taosClose(pWal->fd);
if (pWal->keep == 0) {
// remove all files in the directory
for (int32_t i = 0; i < pWal->num; ++i) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", pWal->path, walPrefix, pWal->id - i);
if (remove(pWal->name) < 0) {
wError("vgId:%d, wal:%s, failed to remove", pWal->vgId, pWal->name);
} else {
wDebug("vgId:%d, wal:%s, it is removed", pWal->vgId, pWal->name);
}
}
} else {
wDebug("vgId:%d, wal:%s, it is closed and kept", pWal->vgId, pWal->name);
}
taosRemoveRef(tsWal.refId, pWal);
}
static int32_t walInitObj(SWal *pWal) {
if (taosMkDir(pWal->path, 0755) != 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("vgId:%d, wal:%s, failed to create directory, reason:%s", pWal->vgId, pWal->path, strerror(errno));
return terrno;
}
if (pWal->keep == 1) {
return TSDB_CODE_SUCCESS;
}
if (pWal && pWal->fd < 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("vgId:%d, wal:%s, failed to open file, reason:%s", pWal->vgId, pWal->path, strerror(errno));
return terrno;
}
wDebug("vgId:%d, wal:%s, is initialized", pWal->vgId, pWal->name);
return TSDB_CODE_SUCCESS;
}
static void walFreeObj(void *wal) {
SWal *pWal = pWal;
wDebug("vgId:%d, wal is freed", pWal->vgId);
taosClose(pWal->fd);
pthread_mutex_destroy(&pWal->mutex);
tfree(pWal);
}
// static bool walNeedFsync(SWal *pWal) {
// if (pWal->fsyncPeriod <= 0 || pWal->level != TAOS_WAL_FSYNC) {
// return false;
// }
// if (tsWal.seq % pWal->fsyncSeq == 0) {
// return true;
// }
// return false;
// }
static void walUpdateSeq() {
taosMsleep(walRefreshIntervalMs);
if (++tsWal.seq <= 0) {
tsWal.seq = 1;
}
}
static void walFsyncAll() {
// int32_t code;
// void * pIter = taosRefCreateIter(tsWal.refId);
// while (taosRefIterNext(pIter)) {
// SWal *pWal = taosRefIterGet(pIter);
// if (pWal == NULL) break;
// if (!walNeedFsync(pWal)) {
// wTrace("wal:%s, do fsync, level:%d seq:%d rseq:%d", pWal->name, pWal->level, pWal->fsyncSeq, tsWal.refreshSeq);
// code = walFsync(pWal);
// if (code != TSDB_CODE_SUCCESS) {
// wError("wal:%s, fsync failed(%s)", pWal->name, strerror(code));
// }
// }
// taosReleaseRef(pWal);
// }
// taosRefDestroyIter(pIter);
}
static void *walThreadFunc(void *param) {
while (1) {
walUpdateSeq();
walFsyncAll();
if (tsWal.stop) break;
}
return NULL;
}
static int32_t walCreateThread() {
pthread_attr_t thAttr;
pthread_attr_init(&thAttr);
pthread_attr_setdetachstate(&thAttr, PTHREAD_CREATE_JOINABLE);
if (pthread_create(&tsWal.thread, &thAttr, walThreadFunc, NULL) != 0) {
wError("failed to create wal thread, reason:%s", strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
}
pthread_attr_destroy(&thAttr);
wDebug("wal thread is launched");
return TSDB_CODE_SUCCESS;
}
static void walStopThread() {
if (tsWal.thread) {
pthread_join(tsWal.thread, NULL);
}
wDebug("wal thread is stopped");
}

351
src/wal/src/walWrite.c
View File

@ -15,171 +15,18 @@
#define _DEFAULT_SOURCE
#include "os.h"
#include "twal.h"
#include "walInt.h"
#include "walMgmt.h"
#include "talloc.h"
#include "taoserror.h"
#include "tchecksum.h"
#include "tutil.h"
#include "ttimer.h"
#include "taoserror.h"
#include "twal.h"
#include "tqueue.h"
#include "twal.h"
#include "walInt.h"
static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp);
static int32_t walRemoveWalFiles(const char *path);
typedef struct {
uint64_t version;
int fd;
int keep;
int level;
int32_t fsyncPeriod;
void *timer;
void *signature;
int max; // maximum number of wal files
uint32_t id; // increase continuously
int num; // number of wal files
char path[TSDB_FILENAME_LEN];
char name[TSDB_FILENAME_LEN+16];
pthread_mutex_t mutex;
} SWal;
static void *walTmrCtrl = NULL;
static int tsWalNum = 0;
static pthread_once_t walModuleInit = PTHREAD_ONCE_INIT;
static int walHandleExistingFiles(const char *path);
static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp);
static int walRemoveWalFiles(const char *path);
static void walProcessFsyncTimer(void *param, void *tmrId);
static void walRelease(SWal *pWal);
static int walGetMaxOldFileId(char *odir);
static void walModuleInitFunc() {
walTmrCtrl = taosTmrInit(1000, 100, 300000, "WAL");
if (walTmrCtrl == NULL)
walModuleInit = PTHREAD_ONCE_INIT;
else
wDebug("WAL module is initialized");
}
static inline bool walNeedFsyncTimer(SWal *pWal) {
if (pWal->fsyncPeriod > 0 && pWal->level == TAOS_WAL_FSYNC) {
return true;
}
return false;
}
void *walOpen(const char *path, const SWalCfg *pCfg) {
SWal *pWal = calloc(sizeof(SWal), 1);
if (pWal == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
pthread_once(&walModuleInit, walModuleInitFunc);
if (walTmrCtrl == NULL) {
free(pWal);
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
atomic_add_fetch_32(&tsWalNum, 1);
pWal->fd = -1;
pWal->max = pCfg->wals;
pWal->id = 0;
pWal->num = 0;
pWal->level = pCfg->walLevel;
pWal->keep = pCfg->keep;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
pWal->signature = pWal;
tstrncpy(pWal->path, path, sizeof(pWal->path));
pthread_mutex_init(&pWal->mutex, NULL);
if (walNeedFsyncTimer(pWal)) {
pWal->timer = taosTmrStart(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, walTmrCtrl);
if (pWal->timer == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
walRelease(pWal);
return NULL;
}
}
if (taosMkDir(path, 0755) != 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("wal:%s, failed to create directory(%s)", path, strerror(errno));
walRelease(pWal);
pWal = NULL;
}
if (pCfg->keep == 1) return pWal;
if (walHandleExistingFiles(path) == 0) walRenew(pWal);
if (pWal && pWal->fd < 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("wal:%s, failed to open(%s)", path, strerror(errno));
walRelease(pWal);
pWal = NULL;
}
if (pWal) wDebug("wal:%s, it is open, level:%d fsyncPeriod:%d", path, pWal->level, pWal->fsyncPeriod);
return pWal;
}
int walAlter(twalh wal, const SWalCfg *pCfg) {
SWal *pWal = wal;
if (pWal == NULL) {
return TSDB_CODE_WAL_APP_ERROR;
}
if (pWal->level == pCfg->walLevel && pWal->fsyncPeriod == pCfg->fsyncPeriod) {
wDebug("wal:%s, old walLevel:%d fsync:%d, new walLevel:%d fsync:%d not change", pWal->name, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
return TSDB_CODE_SUCCESS;
}
wInfo("wal:%s, change old walLevel:%d fsync:%d, new walLevel:%d fsync:%d", pWal->name, pWal->level, pWal->fsyncPeriod,
pCfg->walLevel, pCfg->fsyncPeriod);
pthread_mutex_lock(&pWal->mutex);
pWal->level = pCfg->walLevel;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
if (walNeedFsyncTimer(pWal)) {
wInfo("wal:%s, reset fsync timer, walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrReset(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, &pWal->timer, walTmrCtrl);
} else {
wInfo("wal:%s, stop fsync timer, walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrStop(pWal->timer);
pWal->timer = NULL;
}
pthread_mutex_unlock(&pWal->mutex);
return TSDB_CODE_SUCCESS;
}
void walClose(void *handle) {
if (handle == NULL) return;
SWal *pWal = handle;
taosClose(pWal->fd);
if (pWal->timer) taosTmrStopA(&pWal->timer);
if (pWal->keep == 0) {
// remove all files in the directory
for (int i = 0; i < pWal->num; ++i) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", pWal->path, walPrefix, pWal->id - i);
if (remove(pWal->name) < 0) {
wError("wal:%s, failed to remove", pWal->name);
} else {
wDebug("wal:%s, it is removed", pWal->name);
}
}
} else {
wDebug("wal:%s, it is closed and kept", pWal->name);
}
walRelease(pWal);
}
int walRenew(void *handle) {
int32_t walRenew(void *handle) {
if (handle == NULL) return 0;
SWal *pWal = handle;
@ -190,7 +37,7 @@ int walRenew(void *handle) {
if (pWal->fd >= 0) {
close(pWal->fd);
pWal->id++;
wDebug("wal:%s, it is closed", pWal->name);
wDebug("vgId:%d, wal:%s, it is closed", pWal->vgId, pWal->name);
}
pWal->num++;
@ -199,19 +46,19 @@ int walRenew(void *handle) {
pWal->fd = open(pWal->name, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
if (pWal->fd < 0) {
wError("wal:%s, failed to open(%s)", pWal->name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
wError("vgId:%d, wal:%s, failed to open, reason:%s", pWal->vgId, pWal->name, strerror(errno));
} else {
wDebug("wal:%s, it is created", pWal->name);
wDebug("vgId:%d, wal:%s, it is created", pWal->vgId, pWal->name);
if (pWal->num > pWal->max) {
// remove the oldest wal file
char name[TSDB_FILENAME_LEN * 3];
snprintf(name, sizeof(name), "%s/%s%d", pWal->path, walPrefix, pWal->id - pWal->max);
if (remove(name) < 0) {
wError("wal:%s, failed to remove(%s)", name, strerror(errno));
wError("vgId:%d, wal:%s, failed to remove(%s)", pWal->vgId, name, strerror(errno));
} else {
wDebug("wal:%s, it is removed", name);
wDebug("vgId:%d, wal:%s, it is removed", pWal->vgId, name);
}
pWal->num--;
@ -223,7 +70,7 @@ int walRenew(void *handle) {
return terrno;
}
int walWrite(void *handle, SWalHead *pHead) {
int32_t walWrite(void *handle, SWalHead *pHead) {
SWal *pWal = handle;
if (pWal == NULL) return -1;
@ -235,11 +82,11 @@ int walWrite(void *handle, SWalHead *pHead) {
pHead->signature = walSignature;
taosCalcChecksumAppend(0, (uint8_t *)pHead, sizeof(SWalHead));
int contLen = pHead->len + sizeof(SWalHead);
int32_t contLen = pHead->len + sizeof(SWalHead);
if (taosTWrite(pWal->fd, pHead, contLen) != contLen) {
wError("wal:%s, failed to write(%s)", pWal->name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
wError("vgId:%d, wal:%s, failed to write(%s)", pWal->vgId, pWal->name, strerror(errno));
return terrno;
} else {
pWal->version = pHead->version;
@ -255,29 +102,30 @@ void walFsync(void *handle) {
if (pWal->fsyncPeriod == 0) {
if (fsync(pWal->fd) < 0) {
wError("wal:%s, fsync failed(%s)", pWal->name, strerror(errno));
wError("vgId:%d, wal:%s, fsync failed(%s)", pWal->vgId, pWal->name, strerror(errno));
}
}
}
int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int)) {
SWal *pWal = handle;
struct dirent *ent;
int count = 0;
uint32_t maxId = 0, minId = -1, index =0;
int32_t walRestore(void *handle, void *pVnode, int32_t (*writeFp)(void *, void *, int32_t)) {
SWal * pWal = handle;
int32_t count = 0;
uint32_t maxId = 0;
uint32_t minId = -1;
uint32_t index = 0;
int32_t code = 0;
struct dirent *ent;
terrno = 0;
int plen = strlen(walPrefix);
int32_t plen = strlen(walPrefix);
char opath[TSDB_FILENAME_LEN + 5];
int slen = snprintf(opath, sizeof(opath), "%s", pWal->path);
if (pWal->keep == 0) strcpy(opath + slen, "/old");
snprintf(opath, sizeof(opath), "%s", pWal->path);
DIR *dir = opendir(opath);
if (dir == NULL && errno == ENOENT) return 0;
if (dir == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return terrno;
code = TAOS_SYSTEM_ERROR(errno);
return code;
}
while ((ent = readdir(dir)) != NULL) {
@ -290,6 +138,7 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
}
closedir(dir);
pWal->fileIndex = maxId;
if (count == 0) {
if (pWal->keep) terrno = walRenew(pWal);
@ -297,10 +146,10 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
}
if (count != (maxId - minId + 1)) {
wError("wal:%s, messed up, count:%d max:%d min:%d", opath, count, maxId, minId);
wError("vgId:%d, wal:%s, messed up, count:%d max:%d min:%d", pWal->vgId, opath, count, maxId, minId);
terrno = TSDB_CODE_WAL_APP_ERROR;
} else {
wDebug("wal:%s, %d files will be restored", opath, count);
wDebug("vgId:%d, wal:%s, %d files will be restored", pWal->vgId, opath, count);
for (index = minId; index <= maxId; ++index) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", opath, walPrefix, index);
@ -314,7 +163,7 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
terrno = walRemoveWalFiles(opath);
if (terrno == 0) {
if (remove(opath) < 0) {
wError("wal:%s, failed to remove directory(%s)", opath, strerror(errno));
wError("vgId:%d, wal:%s, failed to remove directory, reason:%s", pWal->vgId, opath, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
}
}
@ -325,7 +174,7 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", opath, walPrefix, maxId);
pWal->fd = open(pWal->name, O_WRONLY | O_CREAT | O_APPEND, S_IRWXU | S_IRWXG | S_IRWXO);
if (pWal->fd < 0) {
wError("wal:%s, failed to open file(%s)", pWal->name, strerror(errno));
wError("vgId:%d, wal:%s, failed to open file, reason:%s", pWal->vgId, pWal->name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
}
}
@ -334,9 +183,9 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
return terrno;
}
int walGetWalFile(void *handle, char *name, uint32_t *index) {
int32_t walGetWalFile(void *handle, char *name, uint32_t *index) {
SWal * pWal = handle;
int code = 1;
int32_t code = 1;
int32_t first = 0;
name[0] = 0;
@ -359,22 +208,9 @@ int walGetWalFile(void *handle, char *name, uint32_t *index) {
return code;
}
static void walRelease(SWal *pWal) {
pthread_mutex_destroy(&pWal->mutex);
pWal->signature = NULL;
free(pWal);
if (atomic_sub_fetch_32(&tsWalNum, 1) == 0) {
if (walTmrCtrl) taosTmrCleanUp(walTmrCtrl);
walTmrCtrl = NULL;
walModuleInit = PTHREAD_ONCE_INIT;
wDebug("WAL module is cleaned up");
}
}
static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
char *name = pWal->name;
int size = 1024 * 1024; // default 1M buffer size
static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
char * name = pWal->name;
int32_t size = 1024 * 1024; // default 1M buffer size
terrno = 0;
char *buffer = malloc(size);
@ -385,36 +221,36 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
SWalHead *pHead = (SWalHead *)buffer;
int fd = open(name, O_RDWR);
int32_t fd = open(name, O_RDWR);
if (fd < 0) {
wError("wal:%s, failed to open for restore(%s)", name, strerror(errno));
wError("vgId:%d, wal:%s, failed to open for restore(%s)", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
free(buffer);
return terrno;
}
wDebug("wal:%s, start to restore", name);
wDebug("vgId:%d, wal:%s, start to restore", pWal->vgId, name);
size_t offset = 0;
while (1) {
int ret = taosTRead(fd, pHead, sizeof(SWalHead));
int32_t ret = taosTRead(fd, pHead, sizeof(SWalHead));
if (ret == 0) break;
if (ret < 0) {
wError("wal:%s, failed to read wal head part since %s", name, strerror(errno));
wError("vgId:%d, wal:%s, failed to read wal head part since %s", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
if (ret < sizeof(SWalHead)) {
wError("wal:%s, failed to read head, ret:%d, skip the rest of file", name, ret);
wError("vgId:%d, wal:%s, failed to read head, ret:%d, skip the rest of file", pWal->vgId, name, ret);
taosFtruncate(fd, offset);
fsync(fd);
break;
}
if (!taosCheckChecksumWhole((uint8_t *)pHead, sizeof(SWalHead))) {
wWarn("wal:%s, cksum is messed up, skip the rest of file", name);
wWarn("vgId:%d, wal:%s, cksum is messed up, skip the rest of file", pWal->vgId, name);
terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
ASSERT(false);
break;
@ -433,13 +269,14 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
ret = taosTRead(fd, pHead->cont, pHead->len);
if (ret < 0) {
wError("wal:%s failed to read wal body part since %s", name, strerror(errno));
wError("vgId:%d, wal:%s failed to read wal body part since %s", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
if (ret < pHead->len) {
wError("wal:%s, failed to read body, len:%d ret:%d, skip the rest of file", name, pHead->len, ret);
wError("vgId:%d, wal:%s, failed to read body, len:%d ret:%d, skip the rest of file", pWal->vgId, name, pHead->len,
ret);
taosFtruncate(fd, offset);
fsync(fd);
break;
@ -457,50 +294,9 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
return terrno;
}
int walHandleExistingFiles(const char *path) {
char oname[TSDB_FILENAME_LEN * 3];
char nname[TSDB_FILENAME_LEN * 3];
char opath[TSDB_FILENAME_LEN];
snprintf(opath, sizeof(opath), "%s/old", path);
struct dirent *ent;
DIR *dir = opendir(path);
int plen = strlen(walPrefix);
terrno = 0;
int midx = walGetMaxOldFileId(opath);
int count = 0;
while ((ent = readdir(dir)) != NULL) {
if (strncmp(ent->d_name, walPrefix, plen) == 0) {
midx++;
snprintf(oname, sizeof(oname), "%s/%s", path, ent->d_name);
snprintf(nname, sizeof(nname), "%s/old/wal%d", path, midx);
if (taosMkDir(opath, 0755) != 0) {
wError("wal:%s, failed to create directory:%s(%s)", oname, opath, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
if (rename(oname, nname) < 0) {
wError("wal:%s, failed to move to new:%s", oname, nname);
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
count++;
}
wDebug("wal:%s, %d files are moved for restoration", path, count);
}
closedir(dir);
return terrno;
}
static int walRemoveWalFiles(const char *path) {
int plen = strlen(walPrefix);
char name[TSDB_FILENAME_LEN * 3];
static int32_t walRemoveWalFiles(const char *path) {
int32_t plen = strlen(walPrefix);
char name[TSDB_FILENAME_LEN * 3];
terrno = 0;
@ -527,54 +323,9 @@ static int walRemoveWalFiles(const char *path) {
return terrno;
}
static void walProcessFsyncTimer(void *param, void *tmrId) {
SWal *pWal = param;
if (pWal->signature != pWal) return;
if (pWal->fd < 0) return;
if (fsync(pWal->fd) < 0) {
wError("wal:%s, fsync failed(%s)", pWal->name, strerror(errno));
}
if (walNeedFsyncTimer(pWal)) {
pWal->timer = taosTmrStart(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, walTmrCtrl);
} else {
wInfo("wal:%s, stop fsync timer for walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrStop(pWal->timer);
pWal->timer = NULL;
}
}
int64_t walGetVersion(twalh param) {
SWal *pWal = param;
if (pWal == 0) return 0;
return pWal->version;
}
static int walGetMaxOldFileId(char *odir) {
int midx = 0;
DIR * dir = NULL;
struct dirent *dp = NULL;
int plen = strlen(walPrefix);
if (access(odir, F_OK) != 0) return midx;
dir = opendir(odir);
if (dir == NULL) {
wError("failed to open directory %s since %s", odir, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
return -1;
}
while ((dp = readdir(dir)) != NULL) {
if (strncmp(dp->d_name, walPrefix, plen) == 0) {
int idx = atol(dp->d_name + plen);
if (midx < idx) midx = idx;
}
}
closedir(dir);
return midx;
}